noun
annual parallax; stellar parallax
Astronomical term for the apparent shift of a star's position due to Earth's orbit around the Sun. Used in distance measurement.
年周視差を使って恒星までの距離を計算する。
Calculate the distance to the star using annual parallax.
Compound of 年周 (annual cycle) and 視差 (parallax). The term is a direct calque from Western astronomy.